Intra-pulse modal instability and beam steering in Quantum Cascade laser

Time-resolved far-field measurements of Quantum Cascade lasers show intra-pulse beam steering on the nanosecond scale. Spatially-dependent spectra at different pulse times show evidence of frequency locking between transverse modes when the beam steering happens. The light pulse instability has been...

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Main Authors: Yu Yao, Bouzi, Pierre M., Aung, N. L., Liu, P. Q., Huang, Yuting, Gmachl, C., Xiaojun Wang
Format: Conference Proceeding
Language:English
Subjects:
Beam steering
Detectors
instability
Laser beams
Laser mode locking
Logic gates
Measurement by laser beam
Quantum Cascade laser
Quantum cascade lasers
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Bouzi, Pierre M.
Aung, N. L.
Liu, P. Q.
Huang, Yuting
Gmachl, C.
Xiaojun Wang
description Time-resolved far-field measurements of Quantum Cascade lasers show intra-pulse beam steering on the nanosecond scale. Spatially-dependent spectra at different pulse times show evidence of frequency locking between transverse modes when the beam steering happens. The light pulse instability has been found to reduce the device received output power by 20% in some cases. A proposal on how to reduce the instability by transverse mode control is presented.
doi_str_mv 10.1109/lec.2012.6410997
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subjects Beam steering
Detectors
instability
Laser beams
Laser mode locking
Logic gates
Measurement by laser beam
Quantum Cascade laser
Quantum cascade lasers
title Intra-pulse modal instability and beam steering in Quantum Cascade laser
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